Can You Write a Smartphone Off As green marketing advantages and disadvantages pdf Business Expense? H pH is the single most important element in swimming pool water chemistry.

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It affects every other chemical balance in pool water. It indicates the relative acidity or basicity of pool water. In pools a slightly alkaline pH of 7. 6 is most desirable because this range is most comfortable to the human eye and provides for optimum use of free chlorine while maintaining water that is not corrosive or scale forming. To avoid the problems listed above, pH must be maintained between 7.

The most desirable level for pH is between 7. If pH is too low – run alkali demand test if available. Never add more than 2 lbs per 10,000 gallons in a single treatment. Be sure the pump is running when chemicals are added. Allow to recirculate then retest to determine if further treatment is necessary. If pH is too high – run acid demand test if available. Carefully add acid at the deep end of the pool.

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